Turbine valve



13 Mamarrin INVENTOR ATTORNEY my invention to, provide 'apparatusof the i designated which lshall incorporate .f governor-controlled *admission -valve mechanism l:which is eapableof adjustment vvhile j Patented 5, 1925K.

i Anine(vraie AND'MQNECTUMNQ'jeoiurANY, A'lconronarroN oF PENNSYLVANIA.:

Appneati'on nieaafprn 2,

1 'Be it'knovvn that I, MATTHEW T. MARTIN,

"fafcitize'n' of the' United States; and'sfa resildent I of Brooklyn, in the lcounty v:ofy Kings .and State of New York, have :inven'teda new and" usefi'il Improvement in Turbine Valves',"`ot Which tli'efollovv-ing isa speciflf My invention relates to primeV movers, more particularly to those of the smallftype,

such, for example, as are.l used with locomop fconnected *to a-.generator'element, `one .Of

`tive headlighter-sets,and it is an object o character the prime mover isinoperation'.VY L-:

' provideaturbinevvhich shall have a range..

A further object'o'fn'iy-l'-inventionfgis' tto provide a transmitting member invabuttlng' relation With respect to lreciprocatory-fV lgov-r ernor-operated elements to render the gover-fl 1n opera-f` Vnor apparatus durable and` reliable tion and economical from the standpoints .of

A further object of myinvention Lto i y of governor adjustment such that thrust-,inv

pcidentzto movementsof adjustment, cannot be imposed upon? the governor or any of its assoeiatedlparts. I Y Y A furthery object of my inventiongis to.

r provide apparatus loffthecharacter .desigfy vhated 'vvhich' shall bey durable and reliable.

Vfrom the standpoints ofrmaintenanceand operation and Whichf shall be economicalin"-` i the consumption of steam. f1 v f j Apparatus lmade 1n'- accordance Vwith v my.v

j invention'is'illustrated'on the accompany-4 vproved valve mechanism applied thereto. My present inventionconstitutes anv im--f provement upon that type of#primefmover VVH. A. NeWber-gSerial No.'

- pany,

" Whether orrnot the turbine is inf operation,

ring drawing, .forminga part of this appli;

cation, in which the tigureis a longitudinal sectional vievv of 'a'turbine showing myfim-Y described and claimed in theapplication of August 29, 1921, and assigned to ,theestventionv are bermade wheneverV desired, regardlessKV o y The turbine or. prime;

bucket-S13. i l Y The casing 111V-preferablyzterminatesat 496,569, filed- .and to provide ai intermednieflatiimiht n im ".betvveen the. governor stem and ,thepushrod,Y ,y which shall prevent possible rotation ott-he` pushy rod, prevent 'possible'.k eccentricnvvear mover orfturbine element, at-.10,.Wh1ch l.is

whose 'bearings lis .indicated iat 10. Then tur- :bine relemenaat 10, constitutes,the, -ba 1sifs,y of

l,my improvement. and.y the generator; vvillnot be kfurther'referred to.; .-f

mover element, at l10, comprises a suitablecasingg 1.1,;Which surrounds a rotor 12 having internal-buckets 13 ona peripheral flange,` 14.@Thew'ea'sin .211 is provided. with La--nozzlefp'assagel l5.,

communicates with nozzle openings t1o. to

supply-motive fluidat lhigh velocity. torithe one end ina hub Lportion 17 which contains a cylindrical opening Y18,'` communicating withz a motive .fluid inlet passage or chamber 19 and with the nozzle supply passage :15.* A cylindrical -valve seat ymember 20/- fits inthe cylindricall opening v18 and it Ihas 'lol .a threaded connection/21therewith, bet'vveen `theinlet passagevv 19v and A theffnozzle .supply passage 15. The 1cylindrical valve seat Lmernberivs provided .vv/ith. an interior passage 22, 'fvvhich communicates with vthe* inlet supply jchamber or vpassage `19` Iand -vvhich l terminates preferably in. a planeffaced valveseat l ortion 23 'or the ball valve'membf. .24.

ey-ondthe seat portion.23,the cylindrical... 7.member 20 is.y provided With a cagecon- .struction 25,for the ball member, lthe cage construction preferably being provided' with "lateral openings 26 to: allow motive fluid: to

.enter .the nozzle supply .passagell and with anylsuitable.,me ans, such as ,a.rivet.27 to limitopening. movement ofthe ,ball valve .member 24 by; the entering,motivegfliid.'N

The governor mechanism, atf.29fis\car ried byand arranged coaxially 'ofztlhe ltur-` bine rotor 12, and it includes'astem' IIlEilber 30, terminating in a socket 31,1Which-con ytains a ball .32. contact Witlranv intermediate member' `33 lThe ball 32Iis`v arranged' to suspended by and held against rotation by a flexible member 34 secured to the turbine casing.

rod 35 having a closeV iitvvith. respect to a bushing 36 carried by the turbine casing. The rod 35 is arranged to contact with the ball valve member 24. As shown, the governor stem 30, the pushfrodi 35,-an'dthe valve seat member 20 are in substantial alignment With the turbine axis.

` contact with the ball 32 and With. the rod The intermediate member 33 permits of satisfactory operation, should' the'ste-m 30 and the ro-d 35v not be 1nv axial alignment,

' therebyv facilitating assembly and manufacture.

it-Was found that there was a tendency for for the ball to Wear oifthe adjacent rend of the 'push rod eccentrically. Accordingly, I devised this intermediate abutting member 33v Which assures fixed positions of contactA vvith the ball' 32y and with the push rode 35., Incidentally, the intern'iediate abutting member 33 prevents any rotary tendencyA being transmitted to the push rod.

The boss or projection 3 7 is preferably madel of sufficient length so as'to avoid contact of the intermediate member 33 with the Wall ofthe socket`31 in case of Wear of the latter or ofthe ball. 32.,

The cylindrical valve seat member 2O may be adjusted longitudinally and externally ofthe turbine merely by turning it. This is important for the reason that aproper positioning ofthe valve parts may be obtained When the apparatus is originally assemble-d merely by turning the cylindrical val-Ve seat member 2O until the the turbine isi-foundY to operate properly.. In this way, minor variations in lengths of governor stems and push rods, thicknesses of intermediate members, and sizes of ballsare taken carey of, permitting of quantity productionv of these parts Without individual adjustment thereof. Also, after the turbine has been in use, it'mayl be desirable, to

v make adjustments from time to" timefin order to take care of any loosenessor weary which may occur in the governor mechanism or' in the transmitting mechanism betvveen the governor and the ball valve 24. Under The other side of the intermediate i member 33 contacts with the valve or push In afprior construction, the governorstem ball' contacted'y With the push rod, andV the latter condition, the cylindrical valve seat may be t-urned to secure the proper adjustment of valve parts.

The cylindrical valve seat member 20 has a smooth cylindrical portion Whichhas-as close a fit as is practicable vvith'respect to theopening 20 in order to oppose leakage to the atmosphere from the inlet chamber. Leakage in thisu manner is furthermore guarded against by a gasket 41, Which surrounds the threaded-stem 40 and which may be: clamped against the hub memberibyfthe nut 42' and by the the cap 44,.heldtight againstY the, hub ymember by lmean-s of the screws- 45. i

The principal function of the nut 4.2 is

- to securea' tight fit in 'threaded connection 21 to minimize leakage from the chamber 19 to the supply passage 15.

The gasket 41 also serves as a` means forf holding ythe valve seat member in an adjusted VA.so

position should the nut 42k Work loose orbe left off. Tovthis end, the gasket 41 is positivelyl connected to the valve seat member in a circumferential direction so thatthe valve seat member 20-may be. adj usted I and held in adjusted positionV byv having theV gasket 41 clamped by the cap 44. Y

The gasket' 41 also serves to deflect steam outwardly When making adjustments,l there-'f' out the valve seat portion 23 contacting With;

the valve ball 24 and transmitting thrust through the intermediate parts to. the governor at 29. rIhis arrangement avoidsfthe possibility of imposing thrusts upon delicate governor parts such as the stirrups.

From the structure described', it will" be apparent thatY I have devised a valve seat member of a governor' controlledj turbine valve which may be adjusted externally of the turbine andvivhile the turbine is inopera-v tion. A fluid tight seal for` the adjustable valve member is assured by means of the jam nut 42 which serves not only to hold the adjustable valve member in position but also to clamp against the gasket 41 which con#4 tacts With the hub portion of' the turbine casing. In addition, the cover 4 4 is; firmly clamped against the bushing 41 therebyv assuring a further sealing ofthe adjustable valve member against possible escape.` of inoeV inappropriate Wrench is applied tothe jwienehfpoi-einaa whereupon the 'cylindre cal "meinbe'r'gfQOmay'be easily turnendfin one direction or A the* other; A the Vscrei'ff-th'readed n connection '2i assuring either-- inward or outwaid'movement of the'v'alveseat memberi 2O AtoY secure 'the desired adjustment. After Vthe adjustment Visf-"made,@the Y-jain r'nut `142 1 is screwed up Vtig-litlyagainst, the gasket 411i'n -order to tiglitenthe threads 21 and tol clamp the/gasket 41 Aand then tliefco-vei' v441'is frel placed, the screws 45y being tightened iipso that the gasl'ret 41' is irmlyj clamped. by the ('oveny f Due ltotlie fact thatthelv Qage`-25 twill Contact with the bushing '36 before the 'seat Hpoi'tionQB. 'contacts witli'tliefvalve balll'24, it "i'sfiinpossible to impose thrusts on ther'g'overnoi incident to valveadjustment.,

AIVhile I have shown my invention fin'but 'fone form, it will be obvious to thoseslilled inthe art that it is not so limited, but is susceptible "of various other changes andy modi- ?ications, Vwithoutdepartingfrom the spirit thereof, and "I desire, thei'efore, "that A.1 only 'such limitations lshall be placed thereupon as are imposed by fthe 'prior `art I' o1' as fare specifically set i forth in the .appended vZlaiins. f

l That I-'claiin-is:-

*' Thecombination with a turbine'fhaving i an 'admission valve of 'the governor-controlled type, of means eXtending'eXternall-y of theturbinefor' adjusting the seatV` portion Vofs the valve while ythe."turbine.is:ini operation, and a! fluid-tight coverfor. said means carried by theturbine.' l 1. 2. The comb'ination'witl'i a turbine: having an axially-alignedadmission 'valve' under the control of agovernor, of means extend- Ving"exteri'ially and axiallyof theturbinefor adjusting the seat portionof the valve'while j the turbine isingoperation.

3. The combination with a turbine having an admission `valve of the governor-controlled ball type which is aligned'withthe Vturbine axis, ofnieans entending eXtei'nally and'aXia-lly of the turbine for adjusting the l' seaty portion of the valve lwhile. the'iturbine is: s

in operation and a Huid-tighty and detachable Y cover 'for saidexternallyi extending means. 4. -'In aturbine,"the 'combination with' acasingfliaving'amotive Afluidinlet chamber:

' and a nozzle supply passage 5 a valve seat member" proj ectingV beyondlthetcasing, havi V ing'a threaded connection with respect. thereto, and having-a'passagev for affording. 'f communication between .the .inlet chamber 4and the *Y nozzle 'supply passage and which* terminatesinaqvalve seat .portion ;V and. a-

` valve coopeiatingwith the .seat'portionto -fcontl'thelowvtof;motive fluid from the'in- *let' chamber to" the nozzle passage.' L

. 5. In aturbine, the combination .oaicasing, 1a cylindrical opening'in'thecasingg'nmyr 65 g `vtivey 'luid inlet 'andnozzlef supply passages Y f1 communicating -vv'ith.' the: .eylndx'i'ealfi' opening,a .cylindrical member having a threaded connection .with l the casing .between they inlet andinozzle supply passages, a passage inthe cylindrical member? for aifording communication7between 'the inlet and nozzle supply T0 vpassages andltermin'atinglin avvalve seat portion,` andjae valve member cooperating Vwith said seatportion. e Y f 1.16.. InV aturbine, the combination of a cas ing, acylindrical opening in the casing,nio- -7 5 'tive fluid inlet. andnozzle supply passages t 'communicating' with the cylindrical: opening,v a cylindrical valvefseat member in the ycylindricalopening --and having a threaded feonnectionrwith the casing between theinlet 80 -andno'zzle supply passages,a passage infthe valve seatmember for -afkfl'or'ding communication-between the inlet andnozzle supply paslsages and terminating in a 'substantially '.plane-aced lseat portion, and 'a ball vvalve f8.5

cooperating with said seatportion. t

v'i'. In aturbine, Ythe combinationof a rcas- ;ing, a'cylindrical opening in the casing, mo-

tive fluid inlet and' nozzle vsupplypassa-ges -a -cylin'dricallvalve seat ineinberin the cylin- "dricalfopening and-having athieaded connection with vthe casing between the inlet and nozzle supply passages,v a :passage fin the communicating with the cylindrical opening, F9.0

- valve :seat member for affording, communi-@95 lcation between the y yinlet and lnozzle supply ...passages and :terminating ina yvalvefseat Sportion, a ball valvecooperlating with z said .seatportiom land governor-operated mechanismvfor limiting the 'reedonrof movement?- yof the. ball valve member. l l

8. vIn` a turbine, the combination of. acas- 'ing, a rotor, a cylindrical openingin the casing in substantial `alignment with the rotor axis, motive fluid inlet and nozzle supply passages commiinicating with the 1 cylindrical opening, acylindrical-Ivalve seat member g having a threaded connection with thejjcasing between they inlet and nozzle supply pasa. cylindrical valve seat; member. in the cylin# drical `:opening and f having a v'threaded connection with vthe-casing between. lthe Iinlet andv thefnozzle` supplypas'sages, a'passage in 'the Ivalve seatV member. for. aifordin'gcom-w munication'between-theinlet and the; nozzle .supply passages ,andjy terminating in x a :'valve seat port-ion, a governor controlled val-ve iinember pcooperatingewith said seat', porti-on, and mea-nsy carried by the cylindrical .inemberi and'proj'ecting beyond .fthe turbine' cas-A' sages, a passage in the valve-seat memberforjlvo ing for turning the cylindrical member, whereby the valve seat portion may be adjusted toward' or away from the valve mem# ber while the turbine is in operation.V

10. In a turbine, the combination of a casing, aI cylindrical opening inthe casing, motive fluid inlet and nozzle supply passages communicating with the cylindrical opening, a cylindrical valve seat memberin, the cylindrical opening and having a threaded connection with the casing between the inlet andthe nozzle supply passages, a passage in the valve seat member for affording communication between the inlet and` the nozzle supply passages and terminating in a valve seatV portion, a` governoi'controlled valve member cooperating. with said seat portion, means carried by the cylindrical member and project-ing beyondr the turbine casing, whereby said vcylindrical member may be turned while the turbine is in operation to move the valve seat portion toward or away from the valve member, and a fluid tight cover carried by the casing for said means.

11. In a turbine, the combination of' a casing, a cylindrical opening in the casing, motive fiuid inlet and nozzle supply passages communicating with the cylindrical opening, a cylindrical valve seat member in the cylindrical opening and having a threaded connection with the casing between the inlet and the nozzle supply7 passages, a passage in the valve Vseatvmember for affordingy communication between the inlet and the nozzle supply passages and terminating in a valve seat portion, a governor-controlled valve member cooperating with said seat portion, a threaded stud carried by the cylindrical member and which terminates in a wrench- 4 spectto the turbine casing` to prevent leak receiving portion, and a lock nut car 'ied by the stud for firmly holding the cylindrical member in a position of adjustment.

12. In a turbine, the combination of a casing, a cylindrical opening in the casing, mo-

tive fluid inlet and nozzle supply passages communicating with the cylindrical opening, a cylindrical valve seat member in the cylindrical opening and having a threaded connection with the casing between, the inlet and the nozzle supply passages, a passage in the valve seat member for affording communication between the inlet and the nozzle supply passages and terminating in a valve seat portion, a governor-controlled valve member cooperatingvwith said seat portion, a threaded stud carried by the cylindrical valve seat member andl terminating in a wrench-receiving portion, a gasket surrounding the stud, and a lock-nut carried by the studi for holding the cylindrical valve seat member in any position' of adjustment and serving to clamp the gasket with reage.

13. In a turbine, the combination-ot a casing, a cylindrical opening in the casing, motive fluid inlet andf nozzle supply passages communicating with the cylindrical opening, a. cylindrical valve seat member in the cylindrical opening and having a threaded connection with the casing between the inlet and the nozzle supply passages, a passage in the valve seatmember for affording communication between the inlet and the nozzle supply passages and terminating in a valve seat portion, a governorcontrolled valve member cooperating'V with said seat portion, a threaded stud carried by the cylindrical valve seat member and terminating in a wrench-receiving portion, a nut carried by the stud for cooperating with the turbine casing to hold the cylindricalV valve seat` member in adjusted position, and a detachable cover for the stud carried by the casing.

14; In a turbine, the combination of a casing, a cylindrical opening in the casing, motive fluid inlet and nozzle supply passages communicating with the cylindrical opening, a cylindrical valve seat member inthe cylindrical opening and having a threaded connection with the casing between the inlet and the nozzle supply passages, a passage in the valve seatmember for affording communication between the inlet and the nozzle supply passages and terminating in aI valve seat portion, a governor-controlled valve member cooperating with said seat portion, a threaded stud carried by the cylindrical valve seat member, a gasket surrounding the stud and contacting with the turbine casing, a jam nut carried by the stud for holding the cylindrical valve seat member in adjustedV position and cooperating with the gasket to prevent leakage, a detachable cover for the stud, and adjustable means for clamping the cover against the gasket to further, prevent leakage.

15. In a turbine, the combination of a casing, a rotor, a hub portion carried by the casing substantially in axial alignment wit-h the rotor, a cylindrical opening in the hub portion, motive fluid inlet and nozzle supply passages communicating with the cylindrical opening, a cylindrical valve seat member in the cylindrical opening and having a threaded connection with the hub portion between the inlet and nozzle supply passages, a passage in the valve seat member for affording communication between said passages and terminating in a valve seat portion, a ball valve member cooperating with the seaty portion, axially disposed governor mechanism carried by the rotor, and axially arranged operating mechanism between the governor mechanism and the ball valve member.

16. In a turbine, t-he combination of' a valve seat memberv adjustable externally of the turbine, a valve'memberfcooperating with theseat vtending to bebpened y, valve seatv memberadjustable externally of the turbine, ya ballvalve cooperating with theseat and i'.tendingtok Vbe opened by the steam, a push-rod for moving the ball valve toward its seat, and a governor for moving the push-rod.

1,8.,'In a turbine, the combination of al threaded member extending vexternally oit the turbine and having a steam passage therein and terminating in a valve seat portion with a cage for the valve, a ball valve lcooperating with the seat portion and tending to be moved away therefrom by the steam, and a governor for moving the ball valve toward its seat portion.

19. In a turbine, the combination of a threaded member extending externally of the turbine and having a steam passage therein and terminating in a valve seat portion and a valve-holding cage, a ball valve in the cage and tending to be moved away from the seat portion by steam, a push-rod 'for moving the ball valve toward the seat potion, and a governor for moving the pushro 20. In a turbine, the combination of an admission valve comprising a seat member which is adjustable externally of the lturbine and a ball valve member movable away from the seat member by entering steam, a push-rod for moving the ball vmember toward the seat member, a governor-operated stem construction, and an abutment mem-y ber between the stem construction and the push-rod and in abutting relation with respect thereto.

21. In a turbine having a casing, the combination ofran admission valve, a governoroperated element, va push-rod between the governor-operated element and the valve, transmitting means in abutting relation between the go-vernor-operated element and the push-rod, and yflexible means for suporting the transmitting means from the turbine casing.

22. In a prime mover having a casing, the combination oan admission valve including a` seat member adjustable externally of the casing and a.. valve member cooperating with the seat member and movable away therefrom kby motive fluid, a push-rod cooperating with said movable valve member for moving itl toward its seat, a governor-operated element, means interposed between the governor-operated element and the push-rod and in abutting relation with respect thereto, and means for supporting said means from the casing.

23. In a prime mover having a casing, the combination of an admission (valve inber, a" governor Vstem' having a ball member at one end thereof, a transmitting'member interposed between the ball member of lsaid Y stem and the push-rod and in Vabutting relationj with Arespect, thereto; and supporting ieans for) the'tranSmittin'g member carried bythe casing. v

24. Inaturbine, the combination of an admission valve comprising a seat member which is adj ust-able externally of the turbine and a movablevalve member cooperating with the seat member and movable away therefrom by entering steam, la push-rod for moving the movable valve member t-oward the seat member, a governor stem, and a transmitting member between the governor stem and the push-rod and in abutting relation withy respeotthereto.

25. In a turbine, the combination of an admission valve comprising a ,valve seat.l

v entering steam, a 'push-rod in substantial alignment with respect to -said seat member `and movableV awayftherefrom by motive Vfluid, a'pu'sh-rod cooperating withVv said ball member Vfor moving it toward'its seat memand operative to move the ball toward the seat member, a governor-operated stem inV substantial alignment with respect to said push-rod, andan intermediate transmitting member in abutting relation with respect to the governor stem and the push-rod.

26. In a turbine having a governor whose axis coincides with vthe turbine axis, the

combination of an admission valve Comprising a seat member in substantial alignment with the turbine axis and which is adjustable externally of the turbine and a ball valve cooperating with the seat member and movable away therefrom by entering steam, a push-rod in substantial alignment with the seat member for moving the ball valve toward the seat member, a governor-operated member in substantial alignment with the push-rod and with said seat member, and a transmitting member interposed between the governor-operated member and a pushrod and iny abutting relation with respect thereto.

27. YIn a turbine having a casing and a governor whose axisl coinoldes with the turbine axis, the lcombination of an admission valve comprising a seat member in substantial alignment with the turbine axis and threaded to the casing and extending externally thereof, and a ball valve member cooperating with the seat member, and which is movable away therefrom by entering steam, a push-rod in substantial alignment with the turbine axis for moving the ball valve member toward its seat, a governor-operated element in substantial alignment with the turbine axis, a transmitting member between the governor-operated member and the push-rod and in abutting relation with respect thereto, and means Carried by the casing for supporting the transmitting member.

28. In a turbine, the combination of a valve seat member adjustable externally o .the turbine, a movable valve member eooperating with the seat member and movable aWay therefrom by entering Vi'uid, a

governor, means for ,transmitting `rmotion from the ,governor to the movable' valve member to move the 'latter in a Closing `direction, and abutment means y1Cor"limit-ing movement of adjustment ot' the seat member in one direction to prevent thrusts being imposed on tliegovernor and transmtting means by the seat member.

In testimony whereof, I have hereunto subscribed my name this 5th day of Mareli 1923; v

MATTHEW T. MABTTN. 

